The GM internal-investigation report about ignition-switch problems raises a host of issues, one of which is its unusually sharp criticism of GM internal lawyers. Criticism of lawyers is nothing new, of course. Lawyer-jokes always blame lawyers; lawyers’ spouses frequently blame lawyers; clients sometimes blame lawyers. But public reports drafted by lawyers infrequently blame lawyers, so this one merits attention, most especially by internal lawyers in large organizations; by the outside counsel who serve them; and by the businesspeople who are the true clients. What are the key takeaways? The Normal, Uneasy. Skim the report. (Just skim it — it’s too long to read cover to cover without heroin. If…